PETROLOGICAL DATA AND PETROGENETIC IMPLICATIONS ON THE PLUTONIC-VOLCANIC COMPLEX OF NDA ALI (SOUTH-WEST CAMEROON)

被引：0
|
作者：
NJONFANG, E
MOREAU, C
机构：
[1] DEPT GEOL, F-63038 CLERMONT FERRAND, FRANCE
[2] URA 10, F-63038 CLERMONT FERRAND, FRANCE
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1992年 / 314卷 / 10期
关键词：
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The plutonic-volcanic complex of Nda Ali belongs to the continental part of the Cameroon Line. It is composed of: 1) a core of plutonic sequence of gabbro-diorite-monzonite-syenite type and 2) a margin of volcanic rock comprising hawaiite and trachyte dykes, penecontemporaneous to the plutonic mass, and a late volcanic series which includes both undersaturated (benmoreite and phonolites) and saturated (trachyte domes) lavas. Rock-forming minerals of these plutonic and volcanic formations indicate: 1) their alkaline character, with peralkaline affinities in the evolved terms; and 2) their crystallization from a common undersaturated magmatic source.
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页码：1051 / 1056
页数：6
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